{"product_id":"baouff-20x4-0-inner-tube-for-macfox-x1s-tst-r002-r002s-butyl-rubber-reinforced-valve","title":"BAOUFF 20x4.0 Inner Tube for MACFOX X1S \u0026 TST R002\/R002S — Butyl Rubber, Reinforced Valve","description":"\u003cp\u003e\u003cstrong\u003eBAOUFF 20x4.0 inner tube designed for MACFOX X1S and TST R002\/R002S e-bikes provides a durable butyl-rubber replacement with a reinforced valve for reliable sealing and improved ride comfort.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen you need a direct, like-for-like inner tube swap for your fat-tire e-bike, this BAOUFF unit matches the original 20x4.0 sizing and fits MACFOX X1S, TST R002, and TST R002S wheels. Built from butyl rubber, it focuses on long-term sealing, enhanced wear resistance, and predictable shock absorption so you can get back on the trail without compromises.\u003c\/p\u003e\n\n\u003ch3\u003eWill this inner tube fit my MACFOX X1S or TST R002 wheel?\u003c\/h3\u003e\n\u003cp\u003eThe BAOUFF inner tube is sized to the standard 20x4.0 specification used by the MACFOX X1S and both TST R002 and R002S models. It replaces the original tube directly, so rim compatibility and valve alignment remain consistent.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCorrect diameter and cross-section: 20x4.0 sizing.\u003c\/li\u003e\n  \u003cli\u003eDesigned for the OEM tire profile of MACFOX X1S and TST R002 series.\u003c\/li\u003e\n  \u003cli\u003eSame valve position as stock tubes for simple mounting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the butyl construction affect ride and durability?\u003c\/h3\u003e\n\u003cp\u003eButyl rubber offers improved airtightness and slows down slow leaks compared with common natural rubbers, which helps maintain stable tire pressure over longer rides. The material also resists abrasion and repeated flexing, extending service life under typical e-bike loads.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBetter air retention than ordinary rubber tubes.\u003c\/li\u003e\n  \u003cli\u003eHigher wear resistance for long-term use.\u003c\/li\u003e\n  \u003cli\u003eConsistent flex and shock damping on rough surfaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat role does the reinforced valve play?\u003c\/h3\u003e\n\u003cp\u003eThe tube includes a strengthened valve assembly to improve sealing and reduce the chance of valve failures or leaks during inflation and riding. A robust valve makes inflation straightforward and provides dependable pressure retention for daily commuting or trail use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReinforced valve body for secure mounting.\u003c\/li\u003e\n  \u003cli\u003eImproved seal to reduce slow leaks.\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard pump heads for easy inflation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs the BAOUFF tube easy to install for me or my mechanic?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward because the tube matches the original size and valve location: remove the tire, swap in the BAOUFF tube, seat the tire bead, and inflate to the recommended pressure. No special tools or modifications are required beyond typical tire-changing equipment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOne-to-one replacement for original 20x4.0 inner tubes.\u003c\/li\u003e\n  \u003cli\u003eWorks with standard tire levers and pumps.\u003c\/li\u003e\n  \u003cli\u003eQuick to install for DIY riders or shop technicians.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: Riders of MACFOX X1S and TST R002\/R002S e-bikes who want a dependable, OEM-sized inner tube replacement that prioritizes airtightness and toughness. It's suitable for commuters, trail riders, and anyone needing a straightforward repair part that restores original fit and keeps ride quality comfortable without added complexity.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this tube fit MACFOX X1S and TST R002\/R002S?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it is manufactured to the 20x4.0 specification and fits MACFOX X1S and both TST R002 and R002S models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use a regular pump with the reinforced valve?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the reinforced valve is compatible with standard pump heads and is easy to inflate.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"BAOUFF","offers":[{"title":"Default Title","offer_id":48084588331166,"sku":"B0FVFHLK4X","price":31.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/baouff-inner-tube-front-view.jpg?v=1785860199","url":"https:\/\/northtrailauto.ca\/products\/baouff-20x4-0-inner-tube-for-macfox-x1s-tst-r002-r002s-butyl-rubber-reinforced-valve","provider":"North Trail Auto","version":"1.0","type":"link"}